Add 98/90 and 27/28
1st number: 1 8/90, 2nd number: 27/28
98/90 + 27/28 is 2587/1260.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
98/90 = 98 × 14/90 × 14 = 1372/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
27/28 = 27 × 45/28 × 45 = 1215/1260 - Add the two like fractions:
1372/1260 + 1215/1260 = 1372 + 1215/1260 = 2587/1260 - So, 98/90 + 27/28 = 2587/1260
In mixed form: 267/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/90+54/28 98/90+27/56 98/90+81/28 98/90+27/84